فهرست مطالب

International Journal of new Chemistry
Volume:9 Issue: 4, Autumn 2022

  • تاریخ انتشار: 1401/01/26
  • تعداد عناوین: 14
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  • Maher Abed El Aziz *, Khald Sdig El Kerikshi, Mohamed Ammar Khalifa, Suad Ramadan Sussli Pages 505-516
    Physicochemical Characteristics of three soil samples collected from Qaser Bin Ghashir region, south of Tripoli, Libya have been investigated in terms of soil permeability, density (ρ), water content (WC), organic content (OC), dissolved salts content (DS), and inorganic ash content (IAC) as-well-as the reaction towards mineral acids and bases. Silicic acid Si(OH)4 was successfully prepared from a sandy soil sample in a considerable amount and the mechanistic equations were proposed for three possible preparation routes of the acid. Results show that the sandy sample is the most permeable and reliable soil for the water penetration and silicic acid preparation respectively. Values of pH and the reaction between soil samples and mineral acids prove the alkalinity nature of the samples. Chemical composition of the investigated samples were determined and were found to vary from the sample to another and from content to other according to the origin and nature of the soil.
    Keywords: soil, Physicochemical characteristics, Permeability, Silicic Acid, Mineral Acids
  • Paimane Taghizade, AmirMohsen Sarrafi, Afshar Alihosseini *, Naeimeh Bahri Laleh Pages 517-539

    In this study a novel photocatalyst, TiO2@WO3/ZnO, has been designed and fabricated. To prepare the catalyst with the highest performance, optimized weight fraction of WO3+Zno (with 1:4 weight ratio), has been alloyed with TiO2. The results from BET and BJH established that synthesized catalyst had relatively high specific surface area (10.3 m2 g-1) and meso-pore structure with cavities diameter of 10.9 nm. The as-synthesized photocatalyst has been employed in the alkanolamine contaminant degradation of wastewater obtained from an industrial gas refinery plant in the presence of LED light. In this regard, the degradation of alkanolamine during time was monitored using UV-Vis and fluorescence spectroscopies. The obtained results confirmed high performance of the designed catalyst in the rapid treatment of wastewater of gas refinery effluent at very low catalyst loading of only 0.5 wt.%, thereby making it a good candidate for the catalytic purposes. Finally, a possible mechanism for catalytic degradation of alkanolamine over TiO2@WO3/ZnO was proposed.

    Keywords: Synthesis, Degradation, Gas refinery effluent, TiO2@WO3, ZnO photocatalyst, Alkanolamine
  • Bahman Naghipour, Eissa Bilehjani * Pages 540-549
    Introduction
    due to the wide indications for the use of rapid sequencing induction with succinylcholine and the high prevalence of fasciculation and myalgia, as well as increasing the dose of succinylcholine by up to 50% when using atracurium and long-term relaxation of atracurium, this plan Studies were performed Evaluation of experiences of using Atracurium and lidocaine on succinylcholine-induced fasciculation in anesthesia surgeries: a study from clinical experience.
    Material And Methods
    This study is a clinical experience that was performed in gold in 2019 in Imam Reza Hospital (Tabriz University of Medical Sciences) with the participation of patients undergoing general anesthesia (requiring rapid sequencing anesthesia and succinylcholine injection). One group received 0.05 mg/kg tracorium with a volume of 5 cc three minutes before induction of anesthesia and the other group received 1.5 mg/kg lidocaine with a volume of 5 cc 30 seconds before induction of anesthesia. The fasciculation status caused by succinylcholine injection was compared between the two groups.
    Results
    The number and severity of fasciculation between the two groups of atracurium and lidocaine to prevent fasciculation were not statistically significant (p> 0.05).
    Conclusion
    Atracurium and lidocaine administration to prevent saccharin-induced fasciculation had similar effects in patients undergoing general anesthesia.
    Keywords: Atracurium, Lidocaine, fasciculation, succinylcholine
  • Bahman Naghipour, Eissa Bilehjani * Pages 550-558
    Introduction
    Since the topic of water and electrolyte disorders in the field of medical sciences is a very important topic and this issue in anesthesia students compared to other students due to the nature of Anna's field is several times more important, we decided to study the present study with the aim Experiences of electrolyte and acid-base disorders teaching in anesthesia students.
    Material and Methods
    This study was conducted as a clinical experiment in Tabriz University of Medical Sciences with the participation of anesthesia students (before the internship). The relevant professor conducted the topic of water and electrolyte disorders in two ways of group discussion (problem solving) with the method of lecture on clinical reasoning for students and finally their scores were compared with each other.
    Results
    A covariance analysis model was used to investigate the relationship between different factors and clinical reasoning score. The results show that there is only a significant relationship between pre-internship score and clinical reasoning score (p-value <0.05).
    Conclusion
    In this study, it was found that in comparing the two methods of teaching lecture and problem solving, although the amount of learning in the two methods did not show a statistically significant difference, but the interns' clinical reasoning scores in the problem solving method were higher than the lecture method.
    Keywords: Experiences of Electrolyte, Acid-base Disorders Teaching, Anesthesia Students, covariance analysis model
  • Bahman Naghipour, Solmaz Fakhari * Pages 559-566
    This study was performed during 2018 in Al-Zahra Hospital (affiliated to Tabriz University of Medical Sciences) and in women candidates for elective cesarean section who were anesthetized under spinal anesthesia. During cesarean section, blood samples were taken from the mother and the umbilical cord of the baby and the amount was compared with each other and their relationship was investigated. The mean MCV in mothers was 83.75 femtoliters (64.3-103.3) with a standard deviation of 5.82, but in infants the mean was 102.18 femtoliters (88.2-109.2) with a standard deviation of 4.69. According to p-value = 0.503 (p> 0.05), it can be said that there is no statistically significant relationship between maternal MCV and neonatal MCV. In this study, it was found that maternal serum hemoglobin level and neonatal umbilical cord hemoglobin were significantly related to each other. However, other parameters such as maternal age, pregnancy rank, infant weight, neonatal sex, delivery method did not show a significant relationship with umbilical cord hemoglobin level. There was also no significant relationship between MCV and MCHC levels of mothers and infants.
    Keywords: hemoglobin, spinal anesthesia, infants, MCV
  • Bahman Naghipour, Solmaz Fakhari * Pages 567-576
    This study is presented as a clinical experience conducted in 2018; Elective women who underwent elective cesarean section for whom spinal anesthesia was prohibited were included in this study. In the first group, in the last 20 minutes of surgery, 1 gram of intravenous paracetamol diluted in normal saline is infused by microst for 20 minutes. The second group did not receive intravenous paracetamol. Postoperative pain was assessed immediately after surgery at 1, 3 and 6 hours after surgery. The severity of surgery was compared in the two groups. The results of multivariate analysis show that in general and in the two groups, changes in heart rate, Blood Pressure and Pain changes significantly over time (P-Value <0.05). According to the results obtained in this study, there was no statistically significant difference between systolic and diastolic blood pressure, heart rate and pain intensity in patients in the two groups (diclofenac suppository + injectable paracetamol and diclofenac suppository alone). Although intravenous paracetamol can probably be effective for mild to moderate pain, it has no significant effect on severe pain in the early hours after surgery.
    Keywords: Paracetamol, Cesarean Section, Pain
  • Abdolreza Mehdinavaz Aghdam, Eissa Bilehjani * Pages 577-586
    Introduction
    The aim of the present study was the experience of using magnesium sulfate infusion in the operating room to induce analgesia after laparoscopic cholecystectomy.
    Material and Methods
    This study was conducted as a clinical experiment in 2018 with the participation of 40 patients who were candidates for laparoscopic cholecystectomy. Magnesium group (M) received 50 mg/kg of magnesium sulfate IV in 100 cc normal saline 0.9% and control group (C) 100 cc normal saline 0.9% after intubation. Intensity was then measured at different times. Pain intensity was measured and compared between the two groups in different situations.
    Results
    There was no statistically significant difference in changes in the amount of pain at rest between the two groups (p-value=0.925) and it can be said that the two drugs did not have different effects. Repeated measures were examined and it was found that the age variable did not have a statistically significant effect on changes in the amount of pain in cough (p-value=0.925).
    Conclusion
    Administration of magnesium sulfate at a dose of 50 mg/kg has no effect on pain intensity and dose of drug used after Laparoscopic cholecystectomy surgery and also changes systolic and diastolic blood pressure and arterial blood oxygen saturation percentage during and at the end of the operation.
    Keywords: magnesium sulfate, Pain, Laparoscopic cholecystectomy
  • Abdolreza Mehdinavaz Aghdam, Solmaz Fakhari * Pages 587-595
    Introduction
    Therefore, due to the frequent exposure of hemodialysis patients to the pain caused by vascular needles and in order to achieve an effective and non-pharmacological action in relieving pain in those patients and due to the widespread use of acupressure and not using this method in SP6 and ST36 in The aim of this study was to compare the effect of acupressure on SP6 and ST36 points on pain due to fistula implantation in hemodialysis patients.
    Material and Methods
    In this study, which is the result of clinical experiences in Tabriz University of Medical Sciences, 90 candidates for dialysis fistula implantation were examined. SP6 and ST36 points massage method was used in dialysis patients to control their pain and their results were compared with each other.
    Results
    There was a statistically significant difference in the mean difference in pain intensity before and after the intervention in the three groups. Tukey post hoc test showed this difference between the control group and the experimental groups (P<0.001) while the two experimental groups together There was no significant difference (P=0.759).
    Conclusion
    The findings of the present study, while confirming and supporting the research hypothesis, showed that massage of SP6 and ST36 pressure points significantly reduces the pain intensity of the needle entry site in venous arterial fistula of patients undergoing hemodialysis.
    Keywords: SP6 Point, ST36 Point, Pain, Fistula Implantation
  • Mohammad Irajian * Pages 596-607
    Introduction
    Chronic ankle instability is usually caused by recurrent ankle sprains. It is estimated that about 70% of people with the first external ankle sprain develop chronic ankle instability. The purpose of this article is to review the background of studies on the variability of ankle joint movement pattern and neuromuscular control strategies in individuals with functional ankle instability.
    Methods
    Articles in reputable databases such as ProQuest, Pubmed Medline, Science Direct were searched for words, functional ankle instability, variability, gait, and neuromuscular control, from 1960 to the end of 2021
    Results
    Based on the results, issues such as ankle joint movement pattern in healthy individuals and people with chronic ankle instability, closed-loop mechanism (reactive), open-loop mechanism (pre-movement) and their role in complete ankle joint instability Were explained.
    Conclusion
    The results presented in the studies that have been done so far on identifying the mechanisms underlying the functional instability of the ankle show the difference between nonlinear and linear dynamic view. In fact, from the point of view of linear dynamics, the results of studies indicate the fact that the ankle in the frontal plane has more displacement in people with functional instability. While from a nonlinear dynamics perspective, studies have shown that people with functional ankle instability have less movement in the frontal lobe than healthy individuals.
    Keywords: Ankle joint, functional instability, ligament, Variability
  • Farnaz Sahhaf, Farhad Mirzaee, Mehdi Khanbabayi Gol * Pages 608-613

    It is very helpful to identify the position of the fetus in high-risk pregnancies as well as in high-risk mothers who have had unsuccessful pregnancies in the past; In most cases, with improper fetal position, fetal as well as maternal mortality occurs. Designing and building a device that can correctly detect the position of the fetus can be used as a preventive method in pregnant mothers. This device is related to the field of medicine that without sending destructive waves to the fetus, which may lead to many complications for the fetus, the waves sent by the fetus can be detected and interpreted, and with its help, the general condition can be The fetus and its position were obtained with the necessary information. Convenient and easy use by the doctor and mother can lead to early diagnosis of possible disorders and subsequent vital measures will be taken as soon as possible.

    Keywords: High-Risk Pregnancies, Designing, Building, Destructive Waves, Subsequent Vital Measures
  • Khosrow Hashemzadeh, Mahnaz Dehdilani * Pages 614-622
    Introduction
    lack of sexual satisfaction in heart patients and the existence of negative effects on patients' quality of life. The results of research also show that most of the interventions performed to improve sexual function were based on cognitive-behavioral counseling; According to the above, the aim of this study was to evaluate the effect of cardiac rehabilitation after coronary artery surgery in postmenopausal women on their sexual satisfaction.
    Material and Methods
    This cross-sectional descriptive study was performed with the participation of 108 postmenopausal women after coronary artery surgery in Shahid Madani Hospital (Tabriz University of Medical Sciences). A previous surgical rehabilitation program was performed for all women and its effects on their sexual satisfaction were evaluated; Finally, the data were compared with each other in SPSS software.
    Results
    The difference in sexual satisfaction scores before and after the intervention was higher in women than men, but the observed difference was not statistically significant (P=0.841). Also, the difference between the scores of sexual satisfaction before and after the intervention and the place of residence of individuals (P=0.896), employment status of individuals (P=668.0), level of education (P=290.0) and economic status (P=0.161) No statistically significant difference was observed.
    Conclusion
    Sexual dysfunction and sexual problems are common in patients after coronary artery bypass graft surgery, but this is ignored despite the recommendation of health organizations to evaluate and counsel sexual issues in heart patients.
    Keywords: sexual dysfunction, coronary artery bypass graft surgery, cardiac rehabilitation
  • Mehrdad Ghazinezhad *, Alireza Bozorgian, Parnian Gholami Dastnaei Pages 623-646
    Frontal polymerization is a relatively old polymerization process that is performed in a limited space and is done with a spontaneously progressive wave mechanism. This process is for quick and easy preparation of all types of polymers, co-polymers, nano composites, large composite parts. In recent years, it has been used to prepare polymer hydrogels. This study is an overview of frontal polymerization in the chemical industry. Hydrogels are a group of lattice polymers with a three-dimensional structure, which, due to their hydrophilic groups, are able to absorb large amounts of water and biofluids without dissolving. SO₃H- in the structure of hydrogels. These materials can absorb from 10% to thousands of times their initial weight in the dry state of water. The water content of hydrogels plays an important role in determining the overall properties of the polymer network. For this reason, compared to hydrophobic polymer networks, hydrophilic hydrogels show different properties. Also, the preparation conditions of hydrophilic hydrogels are milder due to the formation of gels at room temperature and the rare use of organic solvents.
    Keywords: polymerization, Chemical Industry, water, Hydrogel, Solvent
  • Marjan Dehdilani, Khosrow Hashemzadeh * Pages 647-655
    Introduction
    Given the importance of reducing anxiety in patients before coronary artery bypass grafting and the side effects that anxiety can have on the patient's recovery, the researchers decided to investigate the effect of aromatherapy on anxiety in patients before coronary artery bypass graft surgery.
    Material and Methods
    This study was performed as a result of clinical experience in 2020 in Shahid Madani Hospital of Tabriz with the participation of 64 patients after coronary artery bypass graft surgery; Aromatherapy was used to reduce patients' anxiety and the results were reported
    Results
    Independent t-test showed that the mean anxiety score between the experimental and control groups before the intervention was not statistically significant (p= 0.984); But after the intervention, the mean anxiety in the experimental group was significantly lower than the control group (p=0.030). Also, according to the paired t-test in the control group, the anxiety scores before and after the intervention were not significantly different (p=0.509); While in the experimental group, the anxiety score after the intervention showed a significant decrease compared to before the intervention (p=0.007).
    Conclusion
    Considering the results of this study and the positive effect of lavender scent inhalation on reducing anxiety levels in patients undergoing coronary artery bypass graft surgery in the preoperative stage
    Keywords: Aromatherapy, Anxiety, coronary artery bypass graft
  • Nima Norouzi, Ehsan Hashemi Bahramani Pages 656-667

    Fossil fuels make up the bulk of the world’s energy consumption today. One of these fuels is natural gas condensate, which is composed of various carbon compounds and is used as one of the main fuel sources. But these condensates also contain sulfur compounds such as hydrogen sulfide, thiols (citrate), and aromatic compounds that are considered environmental pollutants. Therefore, these sour hydrocarbon sources need to be refined to reduce the sulfur content. In this study, desulfurization of natural gas condensate extracted from the gas field of southern Iran and removal of disulfide oils produced in the South Par refinery was performed by hydrogen-desulfurization ion desulfurization ion with the help of hydrogen. For this simulation, the Aspen Plus software package was used. Unused hydrogen in the effluent is hydrated by washing with an amine solvent to reduce operating costs. Refined condensates are a mixture of complex hydrocarbon compounds called petroleum fractions classified according to their boiling point range. A multi-component distillation system is also simulated to produce optimal products. The cuts taken from the distillation section include boot, light naphtha, heavy naphtha, kerosene, and gas oil. This study aimed to investigate the number of sulfur compounds remaining in these hydrocarbon sections. The results of this experiment show that the final products are completely pure and free of sulfur compounds.

    Keywords: Gas condensate, Disulfide oils, Sulfur compounds, Hydrophilic desulfurization